package com.bdqn.bookshop.interceptor;

import com.bdqn.bookshop.common.BookConstants;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author : 罗若然[LUO_RUO_RAN]
 * @date : 2020-07-27 12:03
 **/
@Component
public class AdminLoginInterceptor implements HandlerInterceptor {


    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object o) throws Exception {
        String requestServletPath = request.getServletPath();
        if (requestServletPath.startsWith("/admin") && null == request.getSession().getAttribute(BookConstants.LOGIN_ADMIN_USER)) {
            request.getSession().setAttribute("errorMsg", "请登陆");
            response.sendRedirect(request.getContextPath() + "/admin/login.html");
            return false;
        } else {
            request.getSession().removeAttribute("errorMsg");
            return true;
        }
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {

    }

    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {

    }

}
